21989940
21,989,940 is an even composite number composed of six prime numbers multiplied together.
21989940 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21989940:
22 × 3 × 5 × 7 × 41 × 1277
(2 × 2 × 3 × 5 × 7 × 41 × 1277)See below for interesting mathematical facts about the number 21989940 from the Numbermatics database.
Names of 21989940
- Cardinal: 21989940 can be written as Twenty-one million, nine hundred eighty-nine thousand, nine hundred forty.
Scientific notation
- Scientific notation: 2.198994 × 107
Factors of 21989940
Divisors of 21989940
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 41 42 60 70 82 84 105 123 140 164 205 210 246 287 410 420 492 574 615 820 861 1148 1230 1277 1435 1722 2460 2554 2870 3444 3831 4305 5108 5740 6385 7662 8610 8939 12770 15324 17220 17878 19155 25540 26817 35756 38310 44695 52357 53634 76620 89390 104714 107268 134085 157071 178780 209428 261785 268170 314142 366499 523570 536340 628284 732998 785355 1047140 1099497 1465996 1570710 1832495 2198994 3141420 3664990 4397988 5497485 7329980 10994970 21989940
- Sum of all divisors σ(n): 72140544
- Sum of proper divisors (its aliquot sum) s(n): 50150604
- 21989940 is an abundant number, because the sum of its proper divisors (50150604) is greater than itself. Its abundance is 28160664
Bases of 21989940
- Binary: 10100111110001010001101002
- Hexadecimal: 0x14F8A34
- Base-36: D3BJO
Squares and roots of 21989940
- 21989940 squared (219899402) is 483557461203600
- 21989940 cubed (219899403) is 10633399558419491784000
-
The
square root of 21989940 is 4689.3432375975 -
The
cube root of 21989940 is 280.1612166815
Scales and comparisons
How big is 21989940?- 21,989,940 seconds is equal to 36 weeks, 2 days, 12 hours, 19 minutes.
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To count from 1 to 21,989,940 would take you about two weeks!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 21989940 cubic inches would be around 23.3 feet tall.
Recreational maths with 21989940
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The information we have on file for 21989940 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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